No they didn't take action, but I'm not sure what action they could have taken that anyone would have been satisfied with. They could have implemented the committee reccomendations (If Trudeau had forced them to), but that had big problems, not the least of which was that a referendum (including developing of the question) would not have been finished before the next election. They could have ignored the referendum bit, and implemented some proportional system, but the NDP didn't name a specific proportional system and besides that the LPC official party policy at the time was for STV/Ranked ballot or for a consensus option, but no concensus came out of committee. On top of all that you might remember that the ISG (independent Senate group) , didn't form a majority in the Senate until 2019, in 2016 /2017 when this all went on the CPC was still a big enough Senate caucus to block ER if they didn't like the terms, and the CPC didn't consider their senators independent.